stream: use validateNumber for BYOB reader options.min

[greenheadHQ]

Replace the open-coded typeof check for options.min in ReadableStreamBYOBReader.prototype.read() with validateNumber. Called without min/max bounds it performs the same check and constructs ERR_INVALID_ARG_TYPE with the same arguments, so the rejection type, code, and message are unchanged.

The added test covers all three validation branches (type, integer/positive, out-of-range), which no existing test pinned, and passes with and without the lib change.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.28%. Comparing base (31cde9f) to head (6925505).
⚠️ Report is 11 commits behind head on main.

Additional details and impacted files

@@ Coverage Diff @@## main #65014 +/- ##
==========================================
- Coverage 90.30% 90.28% -0.02% 
==========================================
Files 759 759 Lines 247621 247634 +13 Branches 46672 46686 +14 ==========================================
- Hits 223603 223570 -33 - Misses 15473 15523 +50 + Partials 8545 8541 -4 

Files with missing lines	Coverage Δ
lib/internal/webstreams/readablestream.js	98.21% <100.00%> (+0.05%)	⬆️

... and 36 files with indirect coverage changes

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